4markers cost $7.04
which equation would determine the cost of 7 markers?

What expression is equivalent to 42x-56y

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.